I usually prefer genuine Yamaha parts, particularly pistons and rings. Has anyone had experience with aftermarket pistons like Wiseco or others? 
OEM pistons are getting pricey. Thanks.

Pay the price, or spent more.

Need mechanix exercise?


cliff

It depends greatly on what bike you're talking about and to a lesser extent what oversize the bore requires.  

Yamaha never made pistons and the same OE manufacturer sometimes sells pistons and rings through other distributors...  and other quality brands are out there.  But for some bikes quality choices are seriously limited.  

I've had good experience with Wiseco pro-lite pistons, ran well in my CR500s. I believe they make pistons for some of our bikes. 

I've had luck with wiseco pistons, and I always liked how the underside is smoothed out on them. Dunno if it helps, but gives me warm fuzzy feelings, and seat dyno always makes me think more power! Lol. Wiseco pistons might be forged, vs oem just cast. Tolerances might need to be looser.

Wiseco is a great choice for most applications. I run them in my 360 and quite a few others.

I put a Wossner piston in my DT2, I like that the skirt is coated. even though the piston is forged it is very quiet compared to the Wiseco forged piston I put in my DT400

Thanks to all for the response. It's for my CT2. It's on the standard bore right now. I did a 175 conversion on a AT3 and used all genuine parts. No issues whatsoever.